DIFF Subgroup
E02B 17/021 Full Title
Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs ; Construction methods therefor (; anchoring floating platforms B63B21/00; floating platforms, e.g. anchored, B63B35/44; ) > placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.